Decay constant of radiun is `lamda`. By a suitable process its compound radium bromide is obtained. The decay constant of radium bromide will be

Options

A. `lamda`
B. More than `lamda`
C. Less than `lamda`
D. Zero

Explanation

To solve the question regarding the decay constant of radium bromide obtained from radium, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Decay Constant**:
The decay constant (λ) is a characteristic of a radioactive substance that indicates the probability of decay of a single nucleus per unit time. It is a fixed value for a particular radioactive isotope.

2. **Identifying the Substance**:
In this case, we are given that the decay constant of radium (Ra) is λ. When radium forms a compound with bromine (Br) to create radium bromide (RaBr2), we need to consider how this affects the decay constant.

3. **Analyzing the Reaction**:
The formation of radium bromide from radium does not change the nature of the radioactive decay of radium itself. The decay constant is intrinsic to the radioactive isotope, which means it does not change when radium forms a compound.

4. **Conclusion**:
Since the decay constant is a property of the radioactive isotope and remains unchanged regardless of the chemical form it takes, the decay constant of radium bromide (RaBr2) will still be λ.

### Final Answer:
The decay constant of radium bromide will be λ.

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